[Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Mate in 2"] [Black "?"] [Result "*"] [Annotator "peter"] [SetUp "1"] [FEN "B4r2/4r3/8/3R1R1N/2P1k2p/4ppPK/6p1/B1n3Q1 w - - 0 1"] [PlyCount "3"] [EventDate "1959.05.19"] [EventType "tourn"] [EventRounds "15"] [SourceVersionDate "2020.04.01"] {[#]} 1. Rf6 {Zugzwang (or a "block" in problem world language)} Rff7 (1... Rxa8 2. Rf4#) (1... e2 2. Qd4#) (1... f2 2. Qxg2#) (1... Rxf6 2. Nxf6#) (1... Ne2 2. Qb1#) (1... Nd3 2. Re5#) (1... Ree8 2. Rd8#) (1... Re6 2. Rxe6#) (1... Re5 2. Rd4#) (1... Ra7 2. Re6#) 2. Rd7# *